Maximum effective ISO is an estimate of the highest sensitivity at which a camera can capture excellent quality photos.
Cameras with higher effective ISO will be better choices for indoor photography, night shooting, and indoor sports photography, especially if you intend to make large prints.
You can learn more at our glossary entry.
Maximum effective ISO test data courtesy of DxO Mark.P7700 test data on DxO Mark F800EXR test data on DxO Mark
Much improved, sleeker camera design doesn't mimic the competition; Sharp 3-inch vari-angle LCD screen swivels to the side, letting you compose shots from difficult angles; Brighter lens performs better in low light; Fast burst mode; Full HD movies.
Some photographers will miss having an optical viewfinder; Slower autofocus and single-shot cycle times when capturing RAW images; Shallow buffer; No one-touch video button.